Dynamical dark energy with perturbations reverses the alleviation of neutrino mass tension seen in smooth models, preferring smaller masses due to degeneracies in growth data from CMB, BAO, RSD, and supernovae.
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SPT-3G delivers the most precise CMB EE and TE spectra at high multipoles to date, giving LCDM parameters with H0 = 66.66 ± 0.60 km/s/Mpc from ground-based data alone and reaching Planck-level constraints when combined with ACT.
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Dark energy perturbations and the robustness of cosmological neutrino-mass constraints
Dynamical dark energy with perturbations reverses the alleviation of neutrino mass tension seen in smooth models, preferring smaller masses due to degeneracies in growth data from CMB, BAO, RSD, and supernovae.
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SPT-3G D1: CMB temperature and polarization power spectra and cosmology from 2019 and 2020 observations of the SPT-3G Main field
SPT-3G delivers the most precise CMB EE and TE spectra at high multipoles to date, giving LCDM parameters with H0 = 66.66 ± 0.60 km/s/Mpc from ground-based data alone and reaching Planck-level constraints when combined with ACT.